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Old 12-14-2011 | 01:19 PM
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billd76
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From: Nottingham, PA
Default RE: 1st pull pull setup?


ORIGINAL: Popriv

I just bought a morris 3d profile plane with pull pull rudder and elevator ( so - do - somthin or other??? ). ( I'll put my OS .55 on it which is at the top end of its power rating)
I already installed the control horns on the elevator and rudder, the holes are about 1/32'' behind the hinge line. ( is that ok? )
Any tips or things to watch out for on the pull pull set up?

Looks like one end just loops through the servo and has a single crimp. Just squish with plyers?
Should I but a drop of CA on the crimp? Its very thin cable with a plastic coating...



Does pull pull put any more strain on the servo? should they be ball bearing? nylon gears alright?
I plan on pulling 2 servos out of old equipment, is there a way to tell the condition of a servo?
Which servos would be the most critical?

throttle - used
rudder - used
elevator - buy new
aileron - buy 2 new

thanks

steve
I think I just finished the same plane its a Morris Hobby So Do Khoi. I have OS 55 AX mounted in mine too. Someone posted somewhere on the forums with pics on how to run the wire through the crimp correctly. just do a search for Pull Pull install. I will try and post pics of my setup soon. Mine was NIB, but morris went out of business in 08 I believe. Mine also had the manual which really had no useful information in it at all. Very poorly written. Once you crimp the wire, add a drop of CA to the crimp. You need to loop the wire through the crimp fitting, then the servo fitting then through the crimp fitting again and then loop it around the crimp fitting and back through the crimp fitting again, Then you are ready to crimp. The Morris ARF comes with very tiny crimp that will not allow to perform the loop procedure. I bought large diameter crimps so that I can do the loop. I do know folks that say if you have the right size crimp, then the loops isn't need, but I think the loop gives me added security. The Crimps that come with the plane are very tight even with just one wire two pass throughs with the wire. The pull save weight. but with the 55 AX you could just mount the servos of the elevator and rudder on the side of the fuse and just run a control rod. Only then you would have to worry about where to run the servo leads. For my morris profile, all the servos are mounted under the wing. I just got mine RTF last night. Hope to maiden it this coming sunday.